Resurfacing machine



June '24 1924. 1,499,110

R. LAKES RESURFAGING MACHINE F d June 12 1923 2 Sheets-Sheet 1' f1 5 5 w 1/2, 25, Z2 I 2a .30

1 10 1 '5'- g 9 7 r1 7 6 I a Z Q6 2 T 4 1 ,5; 1%.1.

INVENTOR 2'1 0567f Zak;

ATTORNEY Patented June 24, 1924;.

* entree srrss iaeane PATENT osr ca.

ROEBEB'I LAKES, 0F BROOKLYN, NEW YORK, ASSIGNOR'TO TODD SHIPYARDS CORPORA- TION, on NEW YORK, N. Y., A

CORPORATION OF NEW YORK.

RESURFACING MACHINE.

Application filed June 12,

. are directed to a machine of this nature which is capable of being rigidly secured in a convenient and novel manner to a cylinder to be re-bored, or to a valve whose seat 15. is to be re-surfaced.

. Further my invention includes novel means whereby the feed of the cutting'tool may beexpeditiously advanced with positive accuracy.

Still further my invention is characterized as consisting of relatively few parts and being of sturdy construction.

Other features and advantages of my invention will hereinafter appear.

In the drawings:

Figure 1 is a side elevation of my improved machine, shown as mounted on a valve whose seat is to be re-surfaced.

Fig. 2 is a top plan view thereof.

Fig. 3 is an enlarged detail view of the feed adjusting means.

Fig. 4 is a' detail, plan view of the ratchet.

Fig. 5 is a partial side elevation of the machine showing a modified form of drive operating means.

Fig. 6 is a section on the line 6-6 of Fig. 5, and

Fig. 7 is a detail view showing adjustment means for'the modified drive of Fig. 5.

Dealing first with that form of my invention illustrated in Figs. 1 to 4, let 1 indicate a valve, here given as an example of a work device to be operated on by my improved machine, the valve seat, which is to be re-surfaced, being indicated at 2.

The valve cover has been removed, but

the studs 3 remain, a pair of these studs, in

opposed relation, serving as the means whereby the frame of my machine is secured to the valve.

Uponthese studs are placed coupling elements in the form of'tubular sections 4, 4 with polygonal external form to serve as nuts, said sections being of equal'length and 1923. Serial No. 644,837.

internally threaded in their lower and upper portions, that they may be respectively screwed upon the studs 3, 3 and receive the lower, threaded endsof bolts 5, 5. A yoke or brace 6 extends transversely of the bolts 5, 5, having elongated slots 7, 7 respectively for the reception of said bolts, thus permitting lateral adjustment, adapting the machine for use with work objects of different diameters; WVashers 8, 8, applied to the lower and upper surfaces of yoke 6, span the slot therein, and form abutment means respectively for the upper end of'each tube section 4 and a nut 9 that is screwed upon a bolt 5, above theyoke. This nut 9, in each instance, is a support for a pipe 10, that fits over the bolt 5 and extends between said nut and an upper yoke 11, which is slotted similarly to the yoke 6 and for alikepurpose. A washer 12 is interposed between the upper end of each pipe 10 and the yoke 11, and another washer 13 lies between a nut '14 and the upper surface'of yoke 11, the nut 14, when screwed tightly down, serving to connect-the yokes, pipes and bolts rigidly to the tubular nuts or sleeves 4, whereby the frame becomes an integral part of the valve structure. The upper, exposed ,ends of bolts. 5 are squared, in order that a wrench may be applied thereto for adjustment purposes.

The yoke 6 has a central, tubular portion 15, with an internal bushing 16, to receive av shaft 17 that carries a cutter 18 near its lower portion. A disk 19 is suitably secured at the end of shaft 17, said disk being of a diameter to fit revolubly within the cylindrical portion of the valve seat, thereby The serving to centreand guide the cutter.

shaft 17, toward its upper end, is screw threaded and passed through an internally smooth, flanged washer or sleeve 20, that fits within a central orifice in yoke 11, the shaft having a vertical groove 21 to receive an inward spline extended from the flan e 22 of sleeve 20. Hence the shaft 17 is sli able through the. yoke 11 for feed advance. A

helical spring 28, placed about the shaft 17,

extends between'the yoke 11 and an-upper,

sleeved nut 24 that is screwed upon said shaft, said spring tending to normally urge the shaft upwardlyt-hrough sleeve 20. An

adjustment nut 25, screwed upon the shaft 17, beneath flange 22, operates, when turned,

to draw the shaft downwardly, against the spring tension, to feed the cutter toward its work.

The shaft 17 may be turned to enable the cutter to perform the cutting operation, by any suitable means. In Figs. 1 and 4: I have shown a ratchet 26, whose revoluble, toothed element 27 engages a hexagon 28 onshaft 17, said element 27 being operable by a spring urged pawl 29 as the ratchet swung in partial turns'by l'ES handle 30.

In the modified form of operating means shown in Figs. 5, 6 and 7 the shaft 17 is provided with a pinion 31, which is splined thereto as at 32, forvertical adjustment, being secured in a determined position by a set screw This pinion is engaged by a worm 3% upon a transverse shaft 35, which is journalledin bearings, 36 that are carried by and offset from the pipes 10 of the frame. A crank 37 engaging the shaft permits its manual operation. Or, instead of the crank 37, suitable p'ower means may be applied to the shaft at its end 38 to operate it.

In the operation of the machine, when it has been fitted to its work object, the adjustmentnut 25, is turned upwardly to draw the shaft 17 downwardly until the cutter is in close contact with the surface to be cut, and then the shaft is turned to rotate the cutter until has completed a circular cutting operation. Then the feed is again advanced for a succeeding operation.

" Although illustrated herein as employed in facing up a pump valve, my improved machine is equally applicable for use with all kinds of valves, and may be used as a boring bar or reamer, and for cutting all types of holes in plating.

Variations within the spirit and scope of my invention are equally comprehended by the foregoing disclosure.

claim:

1 a machine for re-dressing the annular surfaces of work objects having projecting studs, in combination, internally threaded sleeves engaging said studs, bolts extended from said sleeves, pipes titted upon said bolts, transverse braces in different horizontal planes, lying respectively between the sleeve upper ends and pipe lower ends, and between the pipe upper ends and upper engaging means, cutter bearing shaft operable through bearings disposed centrally of said transverse braces, and a guide disk also carried by said shaft to co-act with the annular surface of the work object.

In a machine for re-dressing the annular surfaces of work objects, in combination, a frame, means for securing the frame to a work object, a shaft journalled in said frame, a cutter carried by said shaft, a transverse brace, a sleeve splined to said shaft and having a flange engaging the under surface of said brace, a spring urging said shaft upwardly, and a feed nut threaded on said shaft below the flange of said sleeve.

3. In a machine for re dressing the annular surfaces of work objects, in combination, a shaft, a cutter carried thereby, a pair of parallel standards, means of securing said standards to the work object, a number of transverse braces disposed in different horizontal planes, said braces providing aligned bearings for the shaft, and said braces having means of lateral adjustment relatively to the standards, to render said standards adaptable to engagement with work objects of different diameters.

4. A machine for re-dressing the annular surfaces of work objects comprising a shaft,

a cutter carried thereby, a frame adapted to be connected to the work object, transverse brace elements of said frame affording separate bearings for said shaft, and a circular guide for the cutter co-actingwith the work object to afford an additional shaft bearing.

Signed at the borough of Manhattan, in the city, county, and State of New York, this 11th day of June, A. D. 1923.

ROBERT LAKES. 

